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ZatpatMail
Email Deliverability Guide
MAINTAIN CUSTOMER TRUST

Why email deliverability matters?

Transactional emails—like password resets, order confirmations, and alerts—are essential. If they don’t land in your customer’s inbox, it affects trust, access, and user experience. That’s why great email deliverability isn’t optional—it’s critical.

The Quiet Power of Transactional Emails

What Is Email Deliverability?

Email delivery means your email reached the recipient’s server.
Email deliverability means your email actually landed in the inbox, not spam.
Even legitimate transactional emails can go to spam due to small missteps. Up to 85% of authentic emails may end up in spam folders. So, how can you ensure inbox placement?
The Quiet Power of Transactional Emails

Why You Should Care?

Critical info reaches users
From login credentials to invoices.
Account access is seamless
For OTPs and reset links to function, emails must be timely.
User experience stays smooth
Instant emails after user actions = better satisfaction and retention.
Smarter Emails Start Here

How to Improve Email Deliverability

1. Use a Dedicated Infrastructure
Keep your transactional and marketing emails separate. Marketing emails tend to get marked as spam. If both go through the same server, your transactional emails may also get flagged.

ZatpatMail helps you isolate transactional email delivery for maximum inbox success.
2. Set Up Email Authentication

  • SPF – Authorizes servers to send from your domain.
  • DKIM – Ensures content wasn’t tampered with in transit.
  • DMARC – Combines SPF + DKIM and gives policy instructions to recipient servers.
These boost your domain's trustworthiness.
3. Mind Your IP Reputation
Choose the right type of IP:
  • Shared IP – Best for most senders; monitored by ZatpatMail for quality.
  • Dedicated IP – Ideal for large, consistent volumes. Bad for fluctuating traffic.
ZatpatMail ensures shared IPs are clean, monitored, and reliable.

Key IP factors:
  • Spam complaints
  • Bounce rates
  • Sending volume
  • Engagement rates
  • Age and history of the IP
Check your sending IP’s health regularly using reputation tools.
4. Manage Volume and Frequency
  • Warm up new domains or IPs gradually.
  • Avoid spikes in email volume—consistency builds trust.
5. Optimize Your Email Content

  • From Address – Use personal names with brand identity (e.g., Paula from Zatpat).
  • Subject Lines – Avoid spammy phrases and all-caps. Keep it short and relevant.
  • Personalization – Use merge tags to greet users by name.
  • Plain-text version – Always include it to improve accessibility and authenticity.
  • Clean HTML – Avoid broken tags or messy formatting.
Make sure emails reflect your branding and use trusted links (no shortened or suspicious URLs).
6. Reduce Spam Complaints
  • Set expectations clearly (“You’ll receive a confirmation email shortly.”)
  • Use a real reply-to address (not "noreply@").
  • Let users control what emails they want to receive.
  • Avoid spam-trigger words like discount, offer, sale.
  • Secure public forms using CAPTCHA, double opt-in, or honeypots to prevent bot abuse.
7. Test Before You Send
Preview your emails across devices, browsers, and email clients. Poor formatting increases the risk of being marked as spam.
8. Track and Measure
Monitor:
  • Delivery and bounce rates
  • Open and click rates
  • Device/browser/client usage
  • Delivery speed
ZatpatMail gives you detailed insights, including bounce alerts via webhooks.
9. Maintain a Healthy Email List
  • Purge invalid addresses to reduce bounces.
  • Use ZatpatMail's Suppression List to avoid repeatedly sending to unengaged or problematic addresses.
  • Enable double opt-in to confirm real interest and correct typos.
10. Use a Custom Tracking Domain
To separate analytics from your sending reputation, use a custom domain for tracking links.
11. Take Corrective Actions
Don’t just measure—act on your metrics. If engagement drops or bounce rates rise, investigate and improve immediately.

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Boost your email performance, enhance security, and streamline your email processes with ZatpatMail’s robust features.

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